The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A204294

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A204294

Number of n X n 0..3 arrays with every element neighboring horizontally or vertically both a 0 and a 1, and 2 introduced before 3 in row major order
(history; published version)

#6 by Charles R Greathouse IV at Fri Dec 18 18:17:59 EST 2015

NAME

Number of nXn n X n 0..3 arrays with every element neighboring horizontally or vertically both a 0 and a 1, and 2 introduced before 3 in row major order

Discussion

Fri Dec 18

18:17

OEIS Server: https://oeis.org/edit/global/2478

#5 by Russ Cox at Sat Mar 31 12:37:01 EDT 2012

AUTHOR

_R. H. Hardin (rhhardin(AT)att.net) _ Jan 14 2012

Discussion

Sat Mar 31

12:37

OEIS Server: https://oeis.org/edit/global/875

#4 by Ron Hardin at Sat Jan 14 05:42:36 EST 2012

STATUS

editing

approved

#3 by Ron Hardin at Sat Jan 14 05:42:15 EST 2012

NAME

allocated for Ron HardinNumber of nXn 0..3 arrays with every element neighboring horizontally or vertically both a 0 and a 1, and 2 introduced before 3 in row major order

DATA

0, 4, 80, 5956, 6709692, 47309058644, 2168622256129656, 736756458623041306372

OFFSET

1,2

COMMENTS

Diagonal of A204301

EXAMPLE

Some solutions for n=4

..0..1..0..1....1..0..0..0....0..0..1..1....0..0..1..2....0..0..1..1

..0..1..0..1....1..2..1..1....1..1..2..0....1..2..1..0....1..1..0..0

..0..1..0..0....0..0..0..0....0..0..0..0....1..3..1..0....1..0..2..0

..0..1..1..0....0..1..1..1....0..1..1..1....0..0..1..1....3..0..1..1

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Jan 14 2012

STATUS

approved

editing

#2 by Ron Hardin at Sat Jan 14 05:40:40 EST 2012

KEYWORD

allocating

allocated

#1 by Ron Hardin at Sat Jan 14 05:40:40 EST 2012

NAME

allocated for Ron Hardin

KEYWORD

allocating

STATUS

approved